Rail mount



FIG. 1 is a perspective view of a rail mount showing my new design;

FIG. 2 is a front view of the rail mount thereof;

FIG. 3 is a back view of the rail mount thereof;

FIG. 4 is a left side view of the rail mount thereof;

FIG. 5 is a right side view of the rail mount thereof;

FIG. 6 is a top view of the rail mount thereof; and,

FIG. 7 is a bottom view of the rail mount thereof. 

CLAIM The ornamental design for a rail mount, as shown and described. 